Part 45

Thorndyke looked at him impassively for a moment, and then, in the same quiet tone, answered: “Lead.”

“What!” the two officers shrieked in unison, darting across to the scale and glaring at the bar of metal. Then Badger recovered himself and expostulated, not without temper, “Nonsense, sir. Look at it. Can’t you see that it is gold?”

“I can see that it is gilded,” replied Thorndyke.

“But,” protested Miller, “the thing is impossible! What makes you think it is lead?”

“It is just a question of specific gravity,” was the reply. “This bar contains seventy-two cubic inches of metal and it weighs twenty-nine pounds three ounces. Therefore it is a bar of lead. But if you are still doubtful, it is quite easy to settle the matter. May I cut a small piece off the bar?”

The superintendent gasped and looked at his subordinate. “I suppose,” said he, “under the circumstances--eh, Badger? Yes. Very well, Doctor.”

Thorndyke produced a strong pocket-knife, and, having lifted the bar to the table, applied the knife to one corner and tapped it smartly with the hammer. The blade passed easily through the soft metal, and as the detached piece fell to the floor, the two officers and I craned forward eagerly. And then all possible doubts were set at rest. There was no mistaking the white, silvery lustre of the freshly-cut surface.

“Snakes!” exclaimed the superintendent. “This is a fair knock-out! Why, the blighters have got away with the stuff, after all! Unless,” he added, with a quizzical look at Thorndyke, “you know where it is, Doctor. I expect you do.”

“I believe I do,” said Thorndyke, “and if you care to come down with me to the London Docks, I think I can hand it over to you.”

The superintendent’s face brightened appreciably. Not so Badger’s. That afflicted officer flung down the chip of metal that he had been examining, and, turning to Thorndyke, demanded sourly: “Why didn’t you tell us this before, sir? You let me go off chivvying that damn barge, and you knew all the time that the stuff wasn’t on board.”

“My dear Badger,” Thorndyke expostulated, “don’t you see that these lead bars are essential to our case? They prove that the gold bars were never landed and that they are consequently still on the ship. Which empowers us to detain any gold that we may find on her.”

“There, now, Badger,” said the superintendent, “it’s no use for you to argue with the doctor. He’s like a giraffe. He can see all round him at once. Let us get on to the Docks.”

Having locked the room, we all sallied forth, and, taking a train at Charing Cross Station, made our way by Mark Lane and Fenchurch Street to Wapping, where, following Thorndyke, we entered the Docks and proceeded straight to a wharf near the Wapping entrance. Here Thorndyke exchanged a few words with a Customs official, who hurried away and presently returned accompanied by an officer of higher rank. The latter, having saluted Thorndyke and cast a slightly amused glance at our little party, said: “They’ve landed that package that you spoke about. I’ve had it put in my office for the present. Will you come and have a look at it?”

We followed him to his office behind a long row of sheds, where, on a table, was a strong wooden case, somewhat larger than the “bullion” case, while, on the desk a large, many-leaved document lay open.

“This is your case, I think,” said the official; “but you had better check it by the manifest. Here is the entry: ‘One case containing seventeen and three-quarter dozen brass six-inch by three-eighths screw-bolts with nuts. Dimensions, sixteen inches by thirteen by nine. Gross weight a hundred and nineteen pounds; net weight a hundred and thirteen pounds.’ Consigned to ‘Jackson and Walker, 593, Great Alie Street, London, E.’ Is that the one?”

“That is the one,” Thorndyke replied.

“Then,” said our friend, “we’ll get it open and have a look at those brass screw-bolts.”

With a dexterity surprising in an official of such high degree, he had the screws out in a twinkling, and prizing up the lid, displayed a fold of coarse canvas. As he lifted this the two police officers peered eagerly into the case; and suddenly the eager expression on Badger’s face changed to one of bitter disappointment.

“You’ve missed fire this time, sir,” he snapped. “This is just a case of brass bolts.”

“Gold bolts, Inspector,” Thorndyke corrected, placidly. He picked out one and handed it to the astonished detective. “Did you ever feel a brass bolt of that weight?” he asked.

“Well, it certainly is devilish heavy,” the inspector admitted, weighing it in his hand and passing it on to Miller.

“Its weight, as stated on the manifest,” said Thorndyke, “works out at well over eight and a half ounces, but we may as well check it.” He produced from his pocket a little spring balance, to which he slung the bolt. “You see,” he said, “it weighs eight ounces and two-thirds. But a brass bolt of the same size would weigh only three ounces and four-fifths. There is not the least doubt that these bolts are gold; and as you see that their aggregate weight is a hundred and thirteen while the weight of the four missing bars is a hundred and thirteen pounds, two ounces, it is a reasonable inference that these bolts represent those bars; and an uncommonly good job they made of the melting to lose only two ounces. Has the consignee’s agent turned up yet?”

“He is waiting outside,” replied the officer, with a pleased smile, “hopping about like a pea in a frying-pan. I’ll call him in.”

He did so, and a small, seedy man of strongly Semitic aspect approached the door with nervous caution and a rather pale face. But when his beady eye fell on the open case and the portentous assembly in the office, he turned about and fled along the wharf as if the hosts of the Philistines were at his heels.

“Of course it is all perfectly simple, as you say,” I replied to Thorndyke as we strolled back up Nightingale Lane, “but I don’t see where you got your start. What made you think that the stolen case was a dummy?”

“At first,” Thorndyke replied, “it was just a matter of alternative hypotheses. It was purely speculative. The robbery described by Halethorpe was a very crude affair. It was planned in quite the wrong way. Noting this, I naturally asked myself: What is the right way to steal a case of gold ingots? Now, the outstanding difficulty in such a robbery arises from the ponderous nature of the thing stolen, and the way to overcome that difficulty is to get away with the booty at leisure before the robbery is discovered--the longer the better. It is also obvious that if you can delude some one into stealing your dummy you will have covered up your tracks most completely; for if that some one is caught, the issues are extremely confused, and if he is not caught, all the tracks lead away from you. Of course, he will discover the fraud when he tries to dispose of the swag, but his lips are sealed by the fact that he has, himself, committed a felony. So that is the proper strategical plan; and, though it was wildly improbable, and there was nothing whatever to suggest it, still the possibility that this crude robbery might cover a more subtle one, had to be borne in mind. It was necessary to make absolutely certain that the gold bars were really in the case when it left Bellhaven. I had practically no doubt that they were. Our visit to the Custom House was little more than a formality, just to give us an undeniable datum from which to make our start. We had to find somebody who had actually seen the case open and verified the contents; and when we found that man--Mr. Byrne--it instantly became obvious that the wildly improbable thing had really happened. The gold bars had already disappeared. I had calculated the approximate size of the real bars. They would contain forty-two cubic inches, and would be about seven inches by three by two. The dimensions given by Byrne--evidently correct, as shown by those of the case, which the bars fitted pretty closely--were impossible. If those bars had been gold, they would have weighed two hundred pounds, instead of the hundred and thirteen pounds shown on his report. The astonishing thing is that Byrne did not observe the discrepancy. There are not many Customs officers who would have let it pass.”

“Isn’t it rather odd,” I asked, “that the thieves should have gambled on such a remote chance?”

“It is pretty certain,” he replied, “that they were unaware of the risk they were taking. Probably they assumed--as most persons would have done--that a case of bullion would be merely inspected and passed. Few persons realize the rigorous methods of the Customs officers. But to resume: It was obvious that the ‘gold’ bars that Byrne had examined were dummies. The next question was, where were the real bars? Had they been made away with, or were they still on the ship? To settle this question I decided to go through the manifest and especially through the column of net weights. And there, presently, I came upon a package the net weight of which was within two ounces of the weight of the stolen bars. And that package was a parcel of brass screw-bolts--on a homeward-bound ship! But who on earth sends brass bolts from Africa to London? The anomaly was so striking that I examined the entry more closely, and then I found--by dividing the net weight by the number of bolts--that each of these little bolts weighed over half a pound. But, if this were so, those bolts could be of no other metal than gold or platinum, and were almost certainly gold. Also, their aggregate weight was exactly that of the stolen bars, less two ounces, which probably represented loss in melting.”